There's a rising belief around the NBA that coach Doc Rivers, Kevin Garnett, and Paul Pierce all want to carry on as a trio with the Clippers if they can't roll on in Boston, according to Marc Stein of ESPN.com (on Twitter). Stein sees it as a very possible scenario with a cash/draft pick driven deal for Rivers and separate trades for KG and Pierce without surrendering Blake Griffin (link).
That's not to say that there aren't stumbling blocks for the Clippers to clear before bringing the trio to Los Angeles. Rivers has an unusually strong non-compete clause in his contract that prohibits him from coaching elsewhere for the duration of the deal, which takes him through 2016. There's also a lot of salary that would have to go from L.A. to Boston to accomodate a deal with both Pierce and Garnett. The club could revisit talks from this past trade deadline that would have sent the duo to the Clippers in a package involving Eric Bledsoe and DeAndre Jordan.